Burner.



PATBNTED SEPT. 3, 1907.

A. G. KAUFMAN.

BURNER.

APPLIOATION FILED JULY?. 19,04.

I I l l IIIHIHIIH l f l l l I l llllllrillHllH Wl TNE SSE S 1HE Nasal: Finns cth, wAsmNm-QN, n. c

UNITED sTATEs PATENT OFFICE.

ADOLPH G. KAUFMAN, OF NEW YORK, N. Y., ASSIGNOR TO THE A. G, KAUFMAN MANUFAC- TURING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

BURNER;

To all whomy it may concern:

Be it known that I, ADOLPH G. KAUFMAN, a citizen of the United States, and a resident f the city of New York, borough oi Manhattan, in the county and State ol' N ew York, have invented a new and Improved Burner, oi which the following is a full, clear, and exact description.

The object oi' the invention is to provide a new and improved burner for use on cooking stoves, gas arms and the like, and arranged to insure a complete mixture of the gas and air, to produce an exceedingly strong--fla1ne, capable of quickly and highly heating culinary and other vessels, soldering irons, sad irons, etc., the burner consuming but a small amount of gas.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

'A practical embodiment of the invention is represented in the accompanying drawings 'orming a part 0i this specification, in which similar characters oi reierence indicate corresponding parts in all the views.

Figure l is a sectional side elevation of the improvement, arranged for use as a stove burner, Fig. 2 is a similar view of the same as applied to an ordinary gas 25 arm; and Fig. 3 is a sectional plan view oi the improvement, on the line 3-3 oi Fig. l.

The body of the gas burner illustrated in the drawings is preferably formed of two hollow inverted irustums of cones A, A of which the upper or base end oi the lower irustum oi a cone A is integrally connected by a horizontal apertured flange A2 with the apex or lower ond of the upper l'rustum oi a cone A, The apex end ol the lower l'rustum of a cone A is provided with an integral bottom A3, and air inlets A4 are formed partly in the said bottom A and partly in the side wall ol the irustum ol a cone A, as plainly illustrated in the drawings. The bottom A3 is provided with a central threaded bore, in which screws a nozzle B, connected with a suitable gas supply; for instance as shown in Fig. l, the lower end of the nozzle screws into a gas supply pipe C, and as illustrated in Fig. 2, the nozzle B iits onto an ordinary burner C, with a packing ring D oi asbestos or the like interposed between the nozzle and the burner. li desired, the nozzle B may be directly screwed onto the threaded end of a gas arm from which the burner C has been removed, thesaid nozzle being ior this purpose provided with an interior screw thread B2, as plainly illustrated in Fig. l.

The nozzle l may be screwed up or down in the bottom A3 oi' the burner body, to bring the upper or discharge end of the nozzle higher up or lower down within the frustum oi a cone A, according to the pressure oi the gas in the gas supply; that is, ii the pressure is low, the nozzle is screwed up, and when the pres- Specification of Letters Patent.

Application filed July 7,1904. Serial No. 215,623.

Patented Sept. 3, 1907.

sure is high, the nozzle is screweddownward. Aitor 55 the, nozzle has been adjusted, it is securely locked in position by a jam nut l5, abutting against the under side o the bottom A3.

On the upper or base end of the upper rustum oi' a cone A is ormed an outwardly extending fiange A5, `forming with the top plate D an annular discharge passage for the inflammable mixture of gas and air, the said top plate extending across the upper end of the rustum of a cone A, and the said top plate is supported and held vertically adjustable by screws E, 65

either screwing in the top plate and resting on the up-v per face oi the Harige A, as shown in Fig. l, or the said screws may screw in the fiange A5, to engage the under side oi the top plate D, as shown in` Fig. 2. By adjusting the screws, the top plate D may be moved nearer to or iai-ther from the flange A5, to increase or decrease the size oi the annular discharge passage ior theinfiammable mixture. Lugs D depend from the top plate and t against the inner face oi' the wall of the irustum of a cone A to hold the top plate against; lateral movement.

The peripheral edge of the top plate D is beveled upwardly and outwardly, and the peripheral edge oi the fiange A5 is beveled downwardly and outwardly, as plainly shown in the drawings, so that the bevels ol the top plate and the iiange A5 form a flaring mouth for the ready discharge and spreading oi the llame produced by the burning of the inflammable mixture passing through the said annular discharge passage.

The upper edge of the lower irustum oi a cone A is beveled, to form an annular seat for the dome-shaped top F, provided with a central outlet F in axial alinement with the nozzle B, the said outlet having an outwardly and upwardly curved wall, as plainly indicatedin the drawings. In axial alinement with the opening F is arranged a conical spreader or deector D2, depending integrally from the under side oi' the top plate D.

By the arrangement described, two chambers G and H are formed within the body oi the burner, and the chamber G is a preliminary mixing chamber ior mixing the air entering the openings A4 with the gas issuing trom the nozzle B, and the chamber I-l is a heating and final mixing chamber, into which passes the mixture of gas and air from the chamber G by way oi the central outlet F. New the mixture, in rising in the chamber H, is uniformly spread apart by the deflector D2, so as to pass in a downward direction along the upper surface oi the dome-shaped top F, to be then mixed with atmospheric air entering through the apertures in the fiange A2. The mixture in the chamber H is burned at 10 5 the annular discharge passage between the iiange A5 and the top D, and as the top is heated by the flame, it is evident that the mixture oi the air and gas passing into the chamber H and coming in contact with the under side of the said top plate D is heated before reaching the annular' discharge passage above mentioned.

By having the chamber H in the shape described, it is evident that the mixture of gas, while being heated, is free to expand, and at the saine time a large amount of' air, entering through the apertured flange A2, is added to the mixture, to insure a highly heated and inflammable gas.

By heating the mixture of air and gas passing into the chamber H from the chamber G, a suction action is produced, for drawing air through the openings in the flange A? into the chamber H, to insure a thorough mixture oi this additional air with the mixture already in the chamber H.

The culinary vessel or other article to be heated is placed on a support 1, prelerably in the orm o a ring extending a suitable distance above the burner and connected by arms 1f, either with the wall of the frustum oi a cone A@ as illustrated in Fig, l, or the arms l2 ol the said support may form integral parts of the top plate D, as illustrated in Fig. 2.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A gas burner comprising a preliminary mixing chamher connected with a gas supply and having air inlets, the mixing chamber being approximately in the form of a hollow inverted frustum of a cone and having a domeshaped and apertured top, a heating and final mixing chamber around and over the said top, the said heating and final mixing chamber having outwardly flaring sides and provided with air inlets at the lower end, and a top plate spaced from the top edge of the chamber to form a discharge passage at the side, directly under the top, as set forth.

2. A gas burner comprising a preliminary mixing chamber connected with a gas supply and having air inlets, the mixing chamber being approximately in the form of a hollow inverted frustum of a cane and having a dome shaped and apertured top, a heating and final mixing chamber around and over the said top, the said heating and final mixing chamber being approximately in the form of a hollow inverted frus'tuni of a Cone and having air inlets at the lower end, and a top plate spaced from the top ot' the said chamber to form a discharge passage at the side. directly under the top, said top plate being provided with a conical spreader depending therefrom, in alinement with the opening in the top of the mixing chamber, as set forth.

A gas burner comprising,r a preliminary mixing chamber connected with a gas supply and having air inlets, the top of the mixing chamber being dome-shaped and apertured, :l heatingl and final mixing chamber around and over the said top, the said heating and final mixing charnber having air inlets at the lower end, and a top plate spaced from the top of the said chamber to form a discharge passage at the side, directly under the top, and

means for adjustably holding the said plate in position, to regulate the size of the said discharge passage, as set forth.

In a gas burner a mixing chamber, approximately in the form of a hollow inverted frustum of a cone, and a heating and final mixing chamber in the form of an inverted frustum of a cone, integrally connected at its apex end by an apertured flange with the base end of the said mixing chamber, as set forth. v

A gas burner comprising a mixing chamber, approximately in the form of a hollow inverted frustum of a cone, a heating and final mixing chamber in the form of an inverted frustum of a cone, integrally connected at its apex end by an apertured flange with the base end of the said mixing chamber, a dome-shaped top removably seated on the base end of the mixing chamber, and a lop plate for the heating and mixing chamber, spaced from the top edge of the chamber, to form a discharge passage,

as set forth.

6. A gas burner, comprising a mixing chamber approximately in the form of a hollow inverted frustum of a cone. a heating and final mixing chamber in the form of an inverted frustum of a cone and connected at its apex by an apertured flange with the base of the mixing chambery-a dome-shaped top on the base end of the ,mixing chamber and having a central opening therein, and a top plate spaced from the top of the mixing chamber to form a discharge passage, said top plate being provided with a detlector on its under face above the opening of the said dome. Y

7. A gas burner, comprising a chamber approximately in the form of an inverted frustum of a cone, and having openings formed partly in its bottom and sides, a second chamber in the form of an inverted frustum of a cone above the first chamber and connected with the base thereof by an apertured flange, a dome-shaped top on the base of the first chamber and having a central outwardly flaring opening, an adjustable top plate supported above the top of the second chamber to form between it and said chamber a discharge passage, said top plate having a deflector on its under side above the opening of the dome, and an adjustable nozzle projecting into the first chamber.

8, In a gas burner, the combination of a preliminary mixing chamber provided with a dome-shaped top having a central opening, a heating and final mixing chamber into which the dome-shaped top of the preliminary chamber projects above the bottom thereof, said heating and final mixing chamber having air inlets and provided with an outwardly projecting flange at its upper end, a top plate for the heating and final mixing chamber, said plate having depending lugs on its inner face fitting against the inner face of the said chamber and a deflector over the central opening of the dome-shaped top of the preliminary mixing chamber, and screws engaging the top plate and the flange of the heating and final mixing chamber for ad justing the said plate with respect to the top of said chamber.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

ADOLPH G. KAUFMAN.

Witnesses Trino. G. Hos'lnn, EVnnAnD BOLTON MARSHALL. 

